Data Science Review

What is the first thing you do after you open Pyret?

• Copy and paste.

• Type the contract formula, like count(animals-table, "species").

• Press "run", type animals-table, and press "enter".

• Make a table or a graph right away.

• Ask the teacher to go to the bathroom.

Choose all of the "strings" you see in the image above.

• 9.2

• "species"

• categorical

• female

• "legs"

Tags

CCSS.RI.11-12.7

CCSS.RI.8.7

CCSS.RI.9-10.7

CCSS.RL.11-12.7

CCSS.RL.9-10.7

See the image above. Choose three options below that describe types of categorical data.

• 
• 
• 
• 
• 

See the image above. Choose three options below that describe types of quantitative data.

• 
• 
• 
• 
• 

Decide if each items is quantitative or categorical.

Groups:

(a) Quantitative

,

(b) Categorical

• a description, like species or color

• a countable number, like number of legs or age

• a category of books, like fiction or non-fiction
• a temperature reading, like degrees Celsius or Fahrenheit

• a type of food, like Italian or Mexican

• a brand name, like Nike or Apple
• a volume measurement, like liters or gallons

• a measurement, like height or weight (pounds)

• a speed measurement, like miles per hour or meters per second

• a style of art, like impressionism or cubism
• a distance measurement, like miles or kilometers

• a measurement of time, like seconds or hours

• an amount of money, like income or expenses

• a genre of music, like rock or jazz
• a type of vehicle, like sedan or SUV
• a number that represents a category or area, like a zip code or table number

Match each categorical contract to what it does (its function).

• tells you how much or how many

• pie-chart(table, "string")

• puts a column in order A-Z / numerically

• sort(table, "string", true/false)

• shows percent of values in each category

• count(table, "string")

• limits the table to a number of rows

• first-n-rows(table, number)

• shows amount of values in each category

• bar-chart(table, "string")

Tags

CCSS.6.SP.B.5B

Fill in the blanks to create a contract with a count function.

(a)   ​ ​​ (b)   ​ (c)   ​ (d)   (e)  

• count
• (
• animals-table,
• "species"
• )
• true
• 10
• sort
• "animals table"
• species

count(animals-table, "species")

Look at the display created by a count contract above.

What does it show? Choose the best answer.

• This table shows how many of each species are in the animals table.

• This table shows "cat", "dog", and "lizard".

• This table shows value and count.

• This table shows 11 cats, 15 dogs, 2 lizards, 2 rabbits, 1 snail, and 1 tarantula.

• This table shows because yes.

Tags

CCSS.6.SP.B.5A

Fill in the blanks to create a contract with a sort function.

(a)   ​ ​​ (b)   ​ (c)   ​ (d)   (e)  

• count
• (
• animals-table,
• "species"
• )
• "true"
• 10
• sort
• "animal table
• weeks

Tags

CCSS.1.MD.C.4

sort(animals-table, "species", true)

Look at the display created by a sort contract above.

What does it show? Choose the best answer.

• This table shows all of the animals table data sorted by species from A-Z.

• This table shows that Sasha is a cate, female.

• This table shows the animals in order of age from 1 to 16.

• This table shows name, species, sex, age, fixed, legs, pounds, and weeks.

• This table is very good.